Outlook: Move 'flag status' index column to the left

It looks like this is a bug in Outlook.

If you right click on the columns and click "Customise current view" you can then choose the top option which is fields.

On the right hand side, there is a item called "Flag Status".

I have tried moving it a few times, and whatever I choose, it stays as the last column, even if when I go back to the "show fields" screen, it is still first.

I have tried a few other methods, but this looks like a bug.